Despatcher&#39;s telephone apparatus



P. J. HACKETT.

DESPATCHERS TELEPHONE APPARATUS.

APPLICATION FILED JULY 3. 1919.

4 I WITNESSESI 9272/) Patented July 27, 1920.

UNITED STATES PATENT OFFICE.

PAUL J. HACKETT, OF SEATTLE, WASHINGTON, ASSIGNOR TO UNIVERSAL HIGH- POWER TELEPHONE 00., OF SEATTLE, WASHINGTONJ DESPATOHERS TELEPHONE APPARATUS.

Application filed July 3, 1919. Serial No. 308,545.

To all whom it may concern:

Be it known that 1, PAUL J. HAoKn'r'r, residing at Seattle, in the county of King and State ofWVashington, have invented certain Improvements in Despatchers Telephone Apparatus, of which the following is a specification.

My invention relates to improvements in a despatchers telephone set and the objects of my invention are: first, to provide an arrangement of the sub-station apparatus which will require a minimum amount of attention for operation; second, to so arrange the apparatus of the set that it will not be necessary to have any part supported or handled by the operator; third, to have the apparatus so mounted and constructed that the operator may make adjustments of the position of the various elements.

The objects set forth are obtained by mounting the transmitting and receiving apparatus upon a swinging arm which is supported by wall brackets. The receiver is of the loud-speaking type, and is acoustically connected to asound amplifying horn. The transmitter which is provided with an extension mouth-piece, is attached to the sound amplifying horn so as to place the mouth-piece in front of said horn.

The principal features of my invention are illustrated in the accompanying drawing in which Figure 1, shows the general assembly of the apparatus of my invention; Fig. 2, shows the construction used in attaching the loud-speaking receiver of the sound amplifying horn, and Fig. 3, shows a section along the line 33 of Fig. 1. V

Describing Fig. 1 more completely; the swinging arm support 4 is suspended from wall brackets 5 which are secured to a wall by screws 6; 7- is a clamping ring which is operated by thumb-screw 8; 9 and 10 are metal sleeves for arm 4 and horn 16 respectively, being riveted together by rivets 11, and constituting a supporting member for horn 16; 12 is a washer and 13 a screw, used for clamping sleeve 9 to arm 4; 15 is a felt lining for the sleeve 10; 17 is a bracket secured to horn 16 by fastenings 18, and supporting a transmitter 19 by fastening 20; 21, 22 and 23 are component parts constituting an extension mouth piece for transmitter 19; 25 is a loud speaking receiver attached to horn 16 by sleeve 26; a

Specification of Letters Patent.

Patented July 27, 1920.

spring 27 encircles sleeve 26, one end bearing against receiver 25, the other against ring 28 which'is in contact with sleeve 10; 38 and 24 are the receiver andtransmitter leads, respectively, being brought in from the outside through arm 4.

The method of attaching the loud-speaking receiver to the sound amplifying horn, is shown in Fig. 2. One end of sleeve 26 is solidly secured to horn 16-, the other end being threaded on the inside and receiving the receiver front piece 33'; a diaphragm 32 is clamped between the receiverback ring 31, and'the receiver front piece or ring 33 by screws 34; 35 represents two rubber washers bearing against the diaphragm between both the front and back ring 31; 25 and 29 represent a case andcover inclosing the receiver; a supporting washer 36, lies between the receiver front 133 and the case cover 29; a spring 27 and a ring 28 fit loosely over sleeve 26, one end of the spring bearing against the case front 29, the other end forcing ring 28 against sleeve 10.

The construction along line 3 3 of Fig. 1 is'shown in Fig. 3, in which,.4 is a section of the swinging arm; 16 a section of the horn; 9 a section of one piece of the member supporting the horn; 10 the other piece of the supporting member; 11 rivets securing 9 to 10; 15 a felt lining for piece 10; 12 a washer under the shoulder of thumbscrew 13; and 14 is another washer receiving the screw 13.

The various adjustments which can be made in the set are as follows: the whole Set may be swung in a horizontal plane about the axis of the vertical part of arm 4; the whole set may be raised or lowered by sliding the arm 4 up or down in the clamping ring 7; the telescoping of supporting member 9 over the arm '4 permits the transmitting and receiving apparatus to be swung on a longer or shorter radius about the vertical part of arm 4; the height of the transmitting and receiving apparatus can also be changed by the rotation of the supporting sleeve 9 about the horizontal part of arm 4; the height of the transmitter, relative to the receiver, is changed by rotating horn 16 in the sleeve 10; the telescoped connection between parts 21 and 22 of the extension mouth-piece permits a rotation of the mouth-piece in a vertical plane; the

telescoped connection between parts 22 and 23 of the mouth-piece permits of a rotation of the mouthpiece in a horizontal plane.

In making adjustments by rotating sleeve 9 about arm 4, the'various positions are retained by means of screw 13, which clamps sleeve 9 tightly around the arm 4:. In making adjustments of the position of the transmitter by turning the horntl6 in sleeve 10, the action of spring 27 keeps the horn tightly set in the sleeve, and the friction between the horn and the felt lining of sleeve 10 is sufiicient to retain the various positions of adjustment.

It is obvious that such an arrangement afiords the-operator the use of both hands while sending or receiving, and its flexibility adapts itself to any position desired. 7

. WVhat I claim is:

1. In a telephone apparatus of the class described in combination with, a swinging arm and a sound amplifying horn with a receiver connected thereto, -a supporting means adaptedfor supporting said horn and receiver by said swinging arm, said sup porting means comprising a split cylindrical sleeve telescoping said arm, a conical sleeve lined with a yielding material and telescoping said horn, a connecting member between sald sleeves, and a means for.

clamping said split cylindrical sleeve to said swinging arm, said supporting means adapting said horn to 'berotated about said arm and held at any desired position.

2. In a telephone apparatus of the class described the combination, of a sound amplifying horn with a receiver connected causing friction between said horn and said conical sleeve. I .7 V

3. In a telephone apparatus of the class described, a means of supporting a sound amplifying horn from a swinging arm, said horn having a receiver acoustically connected thereto, and a transmitter'mounted thereon adjacent to its open end, said supporting means comprising a split cylindrical sleeve telescoping said arm, a conical sleeve lined with a yielding material and telescoping said horn, and a member connecting said sleeves, said supporting means being adapted for rotating said horn and its attached elements about said arm and being provided with a friction means for retaining any desired position, said friction means being also adapted for the rotation of said horn within said conical sleeve and being provided with friction means for retaining any desired position of said horn.

V In testimony whereof, I have signed my name to this specification inthe presence of two subscribing witnesses, this twentyfourth day of June, 1919. 1 'PAUL J. HACKETT.

Witnesses: r

R. B. STEWART, J. FARRAR. 

